rg, that's an interesting question. I surmise from three years of discussion on this topic that few to no A330 pilots have been in a training flight that included actual stall buffet. As I understand the training rig, pre stall conditions are responded to with a series of actions to prevent getting into a stall. (There is considerable merit in "an ounce of prevention being worth about 230 tons of cure" as shown by this case.
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Note: If I am wrong about this training regimen, I ask the A330 pilots and trainers to correct my surmise. Being wrong is one way to learn something.